package com.company.Thread.Concurrent;

import java.util.concurrent.TimeUnit;

/**
 * 关于锁的8个问题
 * */
public class lock3 {
    public static void main(String[] args) {
        Phone phone = new Phone();

        new Thread(()->{
            phone.send();
        }, "A").start();

        try {
            TimeUnit.SECONDS.sleep(1);
        }catch (InterruptedException e){
            e.printStackTrace();
        }

        new Thread(()->{
            phone.call();
        }, "B").start();
    }
}

class Phone{
    // synchronized 锁的对象是方法的调用者
    public synchronized void send(){
        try {
            TimeUnit.SECONDS.sleep(3);
        }catch (InterruptedException e){
            e.printStackTrace();
        }
        System.out.println("发短信");
    }

    public synchronized void call(){
        System.out.println("打电话");
    }
}
